Radial turbine of the double rotary type.



T. AHME EN.

RADIAL TURBINE OF THE DOUBLE ROTARY TYPE.

APPLICATION FILED DEC-27. 191 8.

Patented Apr. 8, 1919.

Inventor:

. Th re Ahmefi, z zkm His 'vfiLtorfnegr mobile, GI?! FIF'SPGNG, fi'WEDEN, ASSIGNGR, BY lFgESNE ASSIGNMENTS, 10 .iET'BOLAGEiL LJ'UNGSTROMS ANGTURIBIN, C-F STOCKHOLM, SWEDEN.

RADIAL TURBINE THE DQU'BLIE ROTARY TYPE.

Applicaiion filed lsecen. er 2?, 1913.

lie ii known that l, 'iiiijnr: Anni-inn engineer. nibjcct of the ii'iing'o'f Sweden, residing in" l iinspong T'iwllltlh have ini'ented certain new and useful Improvements in llzulial Turbines of the ,lhiulilefiloiurv Type oi ivhich the 'lolloiving is. a nl'iecilicalion.

The invention relates in means for lapping strain 1min railial turbines: of the double rolary type after is having: been expanoed to a certain degree in the turbine whiie deliveriug: work.

To this enil 'ihc radial blade system is divided into i\\' blade groups separated by a. suitable packing device and connected on car-h side of said packing: device with a chamber provided with a rapping device, so that the steann on flowing" from one division of the blade system to the other, has to pass through this chamber from which a greater or smaller part of the steam may be carried oil".

An embodiment of a double rotary turbine consiructed according to the invention is illusi'ratcd on the accompanying drawing.

Figure 1 shows an axial cross-section of the turbine and Fig. :2 a cross-section perpendicular to *ihali of Fig. l and on the line II II in Fig. l.

in the embodiment shown, 1 designates the turbine casing in which the shafra 3 of the turbine disks 1 and 5 are journaled, said disks being adapted to rotate in oppo cite direc'rions.

means of a suitable packing associated th the. iurbine disks the. blade system is divided in two divisions, 7 and 8. The packing may comprise a single packing ring carried by one of the turbine disks or it may Comp 2 "ZWO or more rings carried aliernately by ihe iu'o turbine disks. in the present instance 1 have shown two rings 6, one projecting from each turbine disk. Steam is supplied to the inner one 7 of these two divisions in the ordinary way through an inlet: pipe 9, a chamber 10 and openings 11 in the turbine dick. ifhe space between the outermost blade. oi the inner division '2' and the packing rings 6 is connected with ringshaped chambers 14; in the. turbine casing through a. series of openings 12 in the turbine disks and corresponding openings 13 in the surrounding Walls of the turbine casingi each of said chambers 1 being provided Specification of Letters Patent.

Patented Apr. 8 191%.

Serial No. 288,573.

broken oii' opposi e to the openings 12, i3 and if), 20. The valves 17 are adapted to operate auioniarieally so as to be opened and closed directly or indirectly by the pressure or the fall of pressure in the pipes 15. No device for the control of this operation is shown in the drawing, as such controlling devices are already well known. -However, at 17 are indicated alining openings for the passage. of stems for valve 17.

The iurbine described operates as follows:

'il'ie stein entering through the pipe 9 flows through the inner division T 01 the blade syateni, thereby driving the turbine, and enters the chamber 14 after having been expanded to a certain degree. for instance to a. pressure of 3 to -l atmospheres. This pressure depends of course upon the location of partition packing ii in the turl'iioe and as is obvious such packing may be placed at a point in the turbine i0 give the pressure at which it is desired to extract steam. This steam may now be tapped off, if Wanted, through zhe pipes 15 and the waives 16 for any purpose or consumption, in which case the valves 17 are partly closed according to the fall of pressure in the pipes 15. The steam flowing through the partly opened valves 'li' enters through the openings 19, 20 into the outer blade system 8 and, while being further expanded, it pases'through this blade system into a chamber 21 Where a condenser pressure prevails.

l no steam is tap 'ierl off from the chum" hers 14, the alves 17 are fully opened and all steam their flows from the division '3 to the division 8.

In accordance. with the provisions of the patent statutes, I have described the princixhnary labyrinth paekings, which.

pic of operation of myinvention, together I desire to have it understood that the apparatus shown is only illustrative and that the invention may be carried out by other means.

Having now particularly described and ascertained my invention and in what manner it is to be performed, I declare that What I claim is '1. A double rotary turbine comprisin a radial blade system, a packing device astened to a turbine disk and dividing said blade system into two divisions, and a chamber provided with a tapping device and connected to said divisions on each side of said packing device, so as to allow the driving fluid to pass from one division 'to the other through said chamber.

2. A double rotary turbine comprisin a radial blade system, a packing device astened to a turbine disk and dividing said blade system into two divisions, a chamber provided with a tapping device and connected to said divisions on each side of said packing device, a valve provided in the connection between said chamber and the second 'division counted in the direction of flow of the driving fluid, and means for controlling said valve bv the pressure in said chamber.

3. A doublerotary turbine comprising two turbine disks rotating in opposite directions, a radial blade system, packing rings fastened to said turbine disks and dividing said blade system into two divisions, two chambers provided in the casing of the turbine, openings provided in the turbine disk and connecting one of said chambers with one of said divisions and the other chamber with the other division and a tapping device connected to the first of said chambers counted in the direction of flow of the driving fiuid.

In testimony whereof I afiix my signature in presence of two witnesses.

THURE AHMEEN. Witnesses:

E. L. LAMKIN, N. Balms, 

